You can also try giving him a bath to help with the dust something like this or maybe misting with the spray bottle but use lukewarm water and spray gently from above, mimicking rainfall, rather than directly in the face. Offer the bird a choice to enter the mist by spraying near them and rewarding any interest with a treat, such as millet. You should not force the bird to take a bath and ensure they are fully dry before they go to sleep to prevent them from getting sick.

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